Will, How many peopel have reached the same stage Northstrider has on Cradle. Currently we only know of 3, or is it 10?
Depends on whether all members of 8-Man Empires have reached the same rank, or if the woman Suriel singled out, who managed to get to Low-Gold when she was only 6 years old, exceeds the rank of her friends.
Hm. I don't think I can answer this with a worldbuilding story.
Therefore, I will sidestep with a story that sort of answers your question:
Reigan Shen is the creator and sole practitioner of the Path of the King's Key. Centuries ago, he consulted an oracle and grew to believe that he was destined to rule the world. He seeks to make that vision a reality.
He fought the Eight-Man Empire to a standstill, though they eventually drove him off. He has stolen Northstrider's prey. He is considered one of the Ninecloud Court's greatest enemies, though everyone below the Queen is instructed to treat him as an honored guest, should he arrive.
Only about six years ago, he finally slew his longtime rival. Though Lindon didn't know it, he felt the aftereffects of that battle in Sacred Valley.